modules: strip debian version from PKG_RELEASE

Fixes nginx#527

Author: thresheek

modules/Dockerfile

@@ -16,7 +16,7 @@ RUN set -ex \
                 patch make wget mercurial devscripts debhelper dpkg-dev \
                 quilt lsb-release build-essential libxml2-utils xsltproc \
                 equivs git g++ \
-    && hg clone -r ${NGINX_VERSION}-${PKG_RELEASE} https://hg.nginx.org/pkg-oss/ \
+    && hg clone -r ${NGINX_VERSION}-${PKG_RELEASE%%~*} https://hg.nginx.org/pkg-oss/ \
     && cd pkg-oss \
     && mkdir /tmp/packages \
     && for module in $ENABLED_MODULES; do \